No, There is no as such impact on the keyword in serp result. But always give different keyword in the hyper link.For example If you are promoting for the Lotus Notes to Outlook Migration Tool in site and then in other site you have hyper link the Lotus Notes to Outlook Migration tool toconvert nsf to pst Then Google will treat it in different manner if the hyper link is same for both keywords or not

That will bring SERP penalty. It's always better to use natural words as anchor, like: click here, visit this page, read more etc. For competitive keywords, you can blend 2-3% targeted keywords as anchor.